Fri, 27 Aug 2010 13:34:14 -0400
6980206: G1: assert(has_undefined_max_size, "Undefined max size");
Summary: An assert in the management.cpp is too strong and assumes the max size is always defined on memory pools, even when we don't need to use it.
Reviewed-by: mchung, johnc
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class instanceKlass; |
duke@435 | 26 | |
duke@435 | 27 | // VM monitoring and management support for the Class Loading subsystem |
duke@435 | 28 | class ClassLoadingService : public AllStatic { |
duke@435 | 29 | private: |
duke@435 | 30 | // Counters for classes loaded from class files |
duke@435 | 31 | static PerfCounter* _classes_loaded_count; |
duke@435 | 32 | static PerfCounter* _classes_unloaded_count; |
duke@435 | 33 | static PerfCounter* _classbytes_loaded; |
duke@435 | 34 | static PerfCounter* _classbytes_unloaded; |
duke@435 | 35 | |
duke@435 | 36 | // Counters for classes loaded from shared archive |
duke@435 | 37 | static PerfCounter* _shared_classes_loaded_count; |
duke@435 | 38 | static PerfCounter* _shared_classes_unloaded_count; |
duke@435 | 39 | static PerfCounter* _shared_classbytes_loaded; |
duke@435 | 40 | static PerfCounter* _shared_classbytes_unloaded; |
duke@435 | 41 | |
duke@435 | 42 | static PerfVariable* _class_methods_size; |
duke@435 | 43 | |
duke@435 | 44 | static size_t compute_class_size(instanceKlass* k); |
duke@435 | 45 | |
duke@435 | 46 | public: |
duke@435 | 47 | static void init(); |
duke@435 | 48 | |
duke@435 | 49 | static bool get_verbose() { return TraceClassLoading; } |
duke@435 | 50 | static bool set_verbose(bool verbose); |
duke@435 | 51 | static void reset_trace_class_unloading(); |
duke@435 | 52 | |
duke@435 | 53 | static jlong loaded_class_count() { |
duke@435 | 54 | return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); |
duke@435 | 55 | } |
duke@435 | 56 | static jlong unloaded_class_count() { |
duke@435 | 57 | return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); |
duke@435 | 58 | } |
duke@435 | 59 | static jlong loaded_class_bytes() { |
duke@435 | 60 | if (UsePerfData) { |
duke@435 | 61 | return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); |
duke@435 | 62 | } else { |
duke@435 | 63 | return -1; |
duke@435 | 64 | } |
duke@435 | 65 | } |
duke@435 | 66 | static jlong unloaded_class_bytes() { |
duke@435 | 67 | if (UsePerfData) { |
duke@435 | 68 | return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); |
duke@435 | 69 | } else { |
duke@435 | 70 | return -1; |
duke@435 | 71 | } |
duke@435 | 72 | } |
duke@435 | 73 | |
duke@435 | 74 | static jlong loaded_shared_class_count() { |
duke@435 | 75 | return _shared_classes_loaded_count->get_value(); |
duke@435 | 76 | } |
duke@435 | 77 | static jlong unloaded_shared_class_count() { |
duke@435 | 78 | return _shared_classes_unloaded_count->get_value(); |
duke@435 | 79 | } |
duke@435 | 80 | static jlong loaded_shared_class_bytes() { |
duke@435 | 81 | if (UsePerfData) { |
duke@435 | 82 | return _shared_classbytes_loaded->get_value(); |
duke@435 | 83 | } else { |
duke@435 | 84 | return -1; |
duke@435 | 85 | } |
duke@435 | 86 | } |
duke@435 | 87 | static jlong unloaded_shared_class_bytes() { |
duke@435 | 88 | if (UsePerfData) { |
duke@435 | 89 | return _shared_classbytes_unloaded->get_value(); |
duke@435 | 90 | } else { |
duke@435 | 91 | return -1; |
duke@435 | 92 | } |
duke@435 | 93 | } |
duke@435 | 94 | static jlong class_method_data_size() { |
duke@435 | 95 | return (UsePerfData ? _class_methods_size->get_value() : -1); |
duke@435 | 96 | } |
duke@435 | 97 | |
duke@435 | 98 | static void notify_class_loaded(instanceKlass* k, bool shared_class); |
duke@435 | 99 | // All unloaded classes are non-shared |
duke@435 | 100 | static void notify_class_unloaded(instanceKlass* k); |
duke@435 | 101 | static void add_class_method_size(int size) { |
duke@435 | 102 | if (UsePerfData) { |
duke@435 | 103 | _class_methods_size->inc(size); |
duke@435 | 104 | } |
duke@435 | 105 | } |
duke@435 | 106 | }; |
duke@435 | 107 | |
duke@435 | 108 | // FIXME: make this piece of code to be shared by M&M and JVMTI |
duke@435 | 109 | class LoadedClassesEnumerator : public StackObj { |
duke@435 | 110 | private: |
duke@435 | 111 | static GrowableArray<KlassHandle>* _loaded_classes; |
duke@435 | 112 | // _current_thread is for creating a KlassHandle with a faster version constructor |
duke@435 | 113 | static Thread* _current_thread; |
duke@435 | 114 | |
duke@435 | 115 | GrowableArray<KlassHandle>* _klass_handle_array; |
duke@435 | 116 | |
duke@435 | 117 | public: |
duke@435 | 118 | LoadedClassesEnumerator(Thread* cur_thread); |
duke@435 | 119 | |
duke@435 | 120 | int num_loaded_classes() { return _klass_handle_array->length(); } |
duke@435 | 121 | KlassHandle get_klass(int index) { return _klass_handle_array->at(index); } |
duke@435 | 122 | |
duke@435 | 123 | static void add_loaded_class(klassOop k) { |
duke@435 | 124 | // FIXME: For now - don't include array klasses |
duke@435 | 125 | // The spec is unclear at this point to count array klasses or not |
duke@435 | 126 | // and also indirect creation of array of super class and secondaries |
duke@435 | 127 | // |
duke@435 | 128 | // for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) { |
duke@435 | 129 | // KlassHandle h(_current_thread, l); |
duke@435 | 130 | // _loaded_classes->append(h); |
duke@435 | 131 | // } |
duke@435 | 132 | KlassHandle h(_current_thread, k); |
duke@435 | 133 | _loaded_classes->append(h); |
duke@435 | 134 | } |
duke@435 | 135 | }; |